Results of an investigation of the use of high-aspect-ratlo mica flakes in hardened portland cement matrices are reported. Increases in flexural strength by a factor of 2 and in fracture toughness by a factor of 4, depending on matrix porosity, are obtained by the addition of small amounts of mica.
โฆ LIBER โฆ
Effect of mica surface treatment on mechanical properties of mica-flake-reinforced cement composites
โ Scribed by J.J. Beaudoin
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 906 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
To determine how the surface modification of mica influences flexural strength and fracture toughness of mica-relnforced cement composites, mica was treated with HF acid and three coupling agents: two silanes (CVBS, yMPS) and a titanate (IDT). Significant increases in mechanical properties resulted, depending on type of treatment, concentration of treating solution, reaction time, and w/c ratio.
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